SBC Expertise
Advanced analysis and configuration of Session Border Controllers
What is an SBC
The Session Border Controller (SBC) is a specialized network device that controls SIP sessions, manages media flows and protects interconnections at voice network boundaries. It ensures interoperability between heterogeneous equipment, normalizes protocols and guarantees the reliability of signaling exchanges.
Key functions
SIP access control
Session authentication and authorization. Filtering by IP address, domain, trunk, with limits on concurrent sessions and bandwidth.
Topology hiding
Rewriting SIP headers (Via, Contact, Route, Record-Route) and SDP information to completely conceal the internal network structure from external partners.
Protocol translation
Interoperability between equipment from different vendors. SIP variant conversion, codec adaptation and signaling transformation for compatibility.
Quality management
Bandwidth control, voice flow prioritization (QoS/ToS), load management and session distribution across multiple servers or carriers.
Advanced security
Protection against DoS/DDoS attacks, SIP anomaly detection, per-source rate limiting, blacklists/whitelists and SIP message compliance validation.
High availability
Active/standby or active/active cluster operation. Automatic failover with no session loss, state synchronization and continuous monitoring.
Deployment contexts
The SBC is deployed in many scenarios: SIP carrier interconnection, SIP trunk control, enterprise peering, unified communications integration (UCaaS), traditional PBX migration and existing architecture adaptation.
Oracle SBC
The Oracle Session Border Controller (formerly Acme Packet) is the market reference for enterprise and carrier environments. It offers fine-grained management of realms, SIP interfaces, session agents, routing policies and security profiles. Bill-IT has deep expertise on this platform.
- -Multi-zone realms and SIP interfaces
- -Session agents and advanced routing policies
- -TLS profiles and certificate management
- -SIP manipulations (header manipulation rules)
- -Codec policies and media management
- -1+1 high availability
- -SNMP monitoring and CDR
SBC vs traditional firewall
A traditional firewall does not understand the SIP protocol. It cannot inspect SIP messages, manage dynamic media port opening or hide internal topology. The SBC is a specialized application firewall that understands voice protocol semantics and operates at the session level, not just the packet level.